Polar Bears, Seal River, Northern Manitoba, CanadaThese two polar bears were passing the time waiting for the Hudson Bay to freeze over so they could go hunt for seals. This was nothing more than a playful challenge — who can open his mouth the widest. Or maybe they were just checking each other’s breath? Nikon D300 with Nikkor 200-400mm lens (at 400mm) ISO 800, f/4 at 1/200th of a second.